Explain the mechanism of breathing in human beings

Asked by admin @ 10/08/2021 in Biology viewed by 301 People

(a) Describe the mechanism of breathing in human beings. (b) (i) Under normal conditions, what is the rate of breathing per minute? (ii) Why does the rate of breathing increase by 20 to 25 times during vigorous exercise?

Answered by admin @ 10/08/2021

(a) Mechanics of Breathing. The action of breathing in and out is due to changes of pressure within the thorax, in comparison with the outside. This action is also known as external respiration. When we inhale the intercostal muscles (between the ribs) and diaphragm contract to expand the chest cavity.
(b) (i) The normal respiration rate for an adult at rest is 12 to 20 breaths per minute.
(ii) Because muscles consume more energy when we exercise and we breath faster so that our heart can work faster to deliver the oxygen.

Explain the mechanism of breathing in human beings

Similar Questions

Explain the mechanism of breathing in humans class 10

Describe the mechanism of breathing in human beings

Describe the mechanism of breathing in human beings class 10

Explain the role of humans in resource development

Explain the mechanism of cleaning action of soaps

Explain the mechanism of cleansing action of soap

Explain the role of human in resource development

Explain the process of digestion in human beings

Explain the role of education in human resource development

Explain the process of digestion in human alimentary canal

Explain the process by which inhalation occurs during breathing

Poverty is a curse upon humanity explain in detail

Explain the mechanism of closing and opening of stomata

Explain the mechanism of the cleansing action of soap

Explain the concept of human development with an example

Most viewed questions in Biology

Dinesh super simplified science biology class 10 pdf free download

Write a few lines of dialogue based on this narrative

When should you refuse to accept food in a shipment

Observe and describe the floral parts of brassica flower

A food worker is putting chemicals into clean spray bottles

Glowing butterfly wings

To what extent do you believe mrs. zahari received effective, safe, and patient-centered care?

Studying one trait at a time ensures that multiple are not changing simultaneously.

Which precautions you have taken in porating of microscope

Birds on an island lab answers

(-3,0);slope =2/3

A major disturbance that caused the ecosystem to stabilize at a new equilibrium.

What morphology is represented in the picture?

Imagine you do dna fingerprinting in a forensics lab apex

In both poems the connotation of the underlined language implies